com.hazelcast.jet.sql.impl.schema.HazelcastSchema Maven / Gradle / Ivy
/*
* Copyright 2021 Hazelcast Inc.
*
* Licensed under the Hazelcast Community License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://hazelcast.com/hazelcast-community-license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.jet.sql.impl.schema;
import com.hazelcast.org.apache.calcite.schema.Schema;
import com.hazelcast.org.apache.calcite.schema.SchemaVersion;
import com.hazelcast.org.apache.calcite.schema.Table;
import com.hazelcast.org.apache.calcite.schema.impl.AbstractSchema;
import java.util.Collections;
import java.util.Map;
/**
* Implementation of a schema, exposing sub schemas and tables.
*/
public class HazelcastSchema extends AbstractSchema {
private final Map subSchemaMap;
private final Map tableMap;
public HazelcastSchema(Map tableMap) {
this(null, tableMap);
}
public HazelcastSchema(Map subSchemaMap, Map tableMap) {
this.subSchemaMap = subSchemaMap != null ? subSchemaMap : Collections.emptyMap();
this.tableMap = tableMap != null ? tableMap : Collections.emptyMap();
}
@Override
protected Map getSubSchemaMap() {
return subSchemaMap;
}
@Override
public Map getTableMap() {
return tableMap;
}
@Override
public Schema snapshot(SchemaVersion version) {
return this;
}
}
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